Python API FIFO Timed out Status

[paulrathke]

I want to judge whether FIFO is timed out in Python and realize this function in python,

 

for example by while loop:

 while fifo.timed_out is True:

but '_FxpFIFO' object has no attribute 'timed_out'

So how can I judge this fifo timed out Status in python.

Any Suggestion or example.